The vertical members of a railing in between the posts also referred to as balusters.

The balusters or turned, carved or otherwise vertical sections placed between the handrail and the stair tread or stair stringer Spiral Stairs- Stairs, which rise regularly around a cylinder or elongated cylinder either real or imaginary. Sometimes called helical stairs.

The 'axles' of the front wheels. They are connected to the steering column through the tie rods. The front wheels are mounted on the spindles. The spindles themselves are mounted to the frame via the kingpin. The part of the spindles to which the tie rods are connected is called the spindle arm or pitman arm.

Short runs of rhythmical responses of 12-16 hertz that have been recorded on an EEG.